Analysis of information sources in references of the Wikipedia article "கட்ட அணி" in Tamil language version.
A matrix can be subdivided or partitioned into smaller matrices by inserting horizontal and vertical rules between selected rows and columns.
We shall find that it is sometimes convenient to subdivide a matrix into rectangular blocks of elements. This leads us to consider so-called partitioned, or block, matrices.
A partitioning as in Theorem 1.9.4 is called a conformable partition of A and B.